THEMIS-D Level 1 Probe State Data

The L1 STATE files contain the following data, sampled at one-minute intervals: * probe position and velocity in GEI, GSE, and GSM coordinates; * flags to indicate regions of interest and maneuver status; * RA and declination of spin axis; * spin period and spin phase; * spin model parameters for high-precision interpolation of spin phase between one-minute data points. Version number indicates data source as follows: * V00: predicted ephemeris and attitude, no spin period or spin phase; * V01: predicted ephemeris and attitude, spin period and spin phase derived from probe telemetry; * V02: predicted attitude, definitive ephemeris from magnetometer and Doppler tracking data; * V03: corrected attitude and spin phase derived from fully calibrated magnetometer data. (added science attitude determination using perigee data post-processing). Produced by Mission Ops, Science Ops and Science Team.